chore: remove RD-E1-Edge model support

This platform has been deprecated, so we now maintain build-only support
for it. This change removes RD-E1-Edge support from both the Open-CI and
the internal CI.

Change-Id: Ieb4676c59b44779e0710b4b70dbfd0a632693aaf
Signed-off-by: Chris Kay <chris.kay@arm.com>
10 files changed